Refactoring: de-couple Extensions from "script injection System" [render side]:3

extensions/renderer/script_injection_manager.h

Index: extensions/renderer/script_injection_manager.h
diff --git a/extensions/renderer/script_injection_manager.h b/extensions/renderer/script_injection_manager.h
index 8ec3d94ed142896f08fbe6f4f3d8c33f05f5e08b..08cf1e13189e9c4def928112bf107dd844d577a8 100644
--- a/extensions/renderer/script_injection_manager.h
+++ b/extensions/renderer/script_injection_manager.h
@@ -45,6 +45,9 @@ class ScriptInjectionManager : public UserScriptSetManager::Observer {
   // Notifies that a new render view has been created.
   void OnRenderViewCreated(content::RenderView* render_view);
 
+  // Removes pending injections of the unloaded extension.
+  void OnExtensionUnloaded(const std::string& extension_id);
+
  private:
   // A RenderViewObserver implementation which watches the various render views
   // in order to notify the ScriptInjectionManager of different document load